taylor



(Model.) `2 Sheets-Sheet l.

W. H. TAYLOR.

LOCK.

No. 403,706. Patented Mag 21 1889.

lcy/l.

l ml

im D@ L im@ 11a zw,

(Model.) 2 Sheets-Sheet 2.

W. H. TAYLOR.

LOCK

Patented May 21 1889.

INVENToH Wren/JZ.

Taylm,

NITRD STATES ATRNT OFFICE.

\VARREX H. TAYLOR, OF STANFORD, CONNECTICUT, ASSGNOR TO THE YALE & TOVNE MANUFACTURING COMPANY, OF SAME PLACE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 403,706, dated May 21, 1889.

Application filed December l0, 1883. Serial No. 293,092. tModel.)

T all 207mm it may concern.-

e it known that I, WARREN H. TAYLOR, of Stamford, in the county of Fairfield and State ot" Connecticut, have invented certain new and useful Improvements in Changeable Combination Key-Locks, of which the following is a specitieation, reference being had to the accompan ying drawings.

My invention relates to that class of locks in which the combination can be set or changed only by the use of the lock-keys. lleretofore in such locks the tumblers, which are each necessarily made in two parts, have to be separated in the ordinary use ot the locks, as appears, for example, in United States Patent No. 874:,17 0. The consequence is that wear takes place, which tinally results in the relations ot the parts of the tumblers being disturbed, so that they will not register perfectly and will not accomplish the objects for which they are designed. This difficulty is not incident to my lock, for the reason that in its ordinary use the parts of the tumblers do not separate, but always work altogether in engagement with one another', except when separated to change the combination, which onlyv seldom occurs.

illy invention consists in the organization of parts hereinafter described and succinctly stated in my appended claims.

In orderto illustrate my invention, l exhibit in the drawings an entire lock containing, ot' course, many parts that are old, but necessary to be shown in order to exhibit the structure and operation of my improvements and their proper relations to ordinary lock mechanism when applied to use.

In the drawings, Figure l is a view of my improved lock with the cap-plate removed, showing the tumblers disengaged applied to a post-otlice lock-box door. Fig. 2 is a similar view showing the tumblers engaged and the lock-bolt in the unlocked position. Fig. 3 shows the lock with the cap-plate in place. Fig. L is a view of the lock with the tumbler mechanism removed, but indicated in dotted lines merely to showits relative position. Fig. 5 is a section on the line 5 5 of Fig. 2. Fig. (i is a group of parts in nine divisions, showing them separately in perspective. Fig. 7 is another groupof parts in two divisions, showing the part-.s in perspective. Fig. S is another group of two dit'terent keys suitable for my lock.

A indicates a lock-case, and B a capsplate. The case is provided with corner-lugs (i to receive the cap-plate-tastening screws l) l). The case is also provided with a block, E, for containing the sliding bolt-rod F and its spri ng G, the rod being pivoted to the pivoted latchbolt Il, as shown.

I indicates a sliding fence provided with a spring, K, tending to keep it out ot engagement with the gatings L in the sliding parts of the tumblers.

)l indicates a key-hub, and N the cam engaging with the sliding bolt-rod F.

O is another cam for operating the tence.

I indicates pivoted spurgeared springtumblers of ordinary construction, adapted to be turned on their pivots by the operation of the key.

Q indicates the sliding parts of the tumblers, which are provided with spur-gearing, as usual in this class of tumblers, composed each ot' two different parts geared together.

All ot' the parts of the lock thus far mentioned are of usual construction and need not be further described.

Coming, now, to the peculiar parts otl the lock that constitute my invention, it will be observed that the sliding parts of the tumblcrs are mounted upon an oscillating seat, R, having an arm, S, by which it is pivoted to the case at T. This seat is provided with a post, U, which extends up through the cap-plate, and is provided with a thumb-nut, V, serving as a handle i'or oscillating' the seat and the parts it carries.

lll' indicates a stud projecting from the Oscillating seat and passing up through slots X in the sliding tumblers, and serving as a guide for them, as does also the post U.

Y indicates a catch pivoted to the oscillating seat at Z, and provided with a spring, Ct, tending to keep it in engagement with the notches l) ol' the sliding tumblers whenever they are raised to their greatest height.

c is a pin projecting out through the capplate from the Yl'ree end of the catch Y.

(l indicates a latch pivoted to the cap-plate at rf, and provided with a st ud,f, t'or moving it on its pivot. rlhis latchis adapted to hook around the post U and hold the sliding parts of the tumblers in engagement with the pivoted parts. This latch is also tapered at its end, so as to bear with a wedging or cam action against the pin c and force the catch Y back to a position where it will not engage with the notches b of the sliding parts of the tumblers. The' thumb-nut may be screwed down upon the latch d and held in position to fasten the two parts of the tumblers together.

g and 7L are stops to limit the movements of the swinging` tumblers P.

The operation of my improvements for the purpose of changing the combination and using a new key is as follows: The first thing to do is to unscrew the thumb-nut V and swing the latch CZ out of engagement with the post U and pin c. Then by pressing on the thumbnut V the oscillating seat and the sliding parts of the tumblers can be swung to one side and held by the catch Y, so-that the tumblers will not be in engagement by their spurblers should now be swung back again by means of the thumb-nut V, so as to engage with the pivoted parts. The latch CZ should now be swung down,so as to hook around the post U and press the catch Y out of engagement withthe tumbler-notches. The thumbnut should be screwed to place, and the lock will then be adjusted and fastened to the proper position to operate on a combination for the new key.

Vhat I'claim to be new is- 1. The combination, with the pivoted oscillating seat, of the sliding tulnblers carried thereby, the sliding fence, the pivoted spring- `catch Y, for engaging with the notches in the NVitnesses:

SQHUYLER MERRITT, HOWARD L. UNDERHILL.

.lili A 

